80185189929 has 16 divisors (see below), whose sum is σ = 115144643712. Its totient is φ = 49341760128.

The previous prime is 80185189927. The next prime is 80185189939. The reversal of 80185189929 is 92998158108.

It is not a de Polignac number, because 80185189929 - 2¹ = 80185189927 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80185189927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 718324 + ... + 822410.

It is an arithmetic number, because the mean of its divisors is an integer number (7196540232).

Almost surely, 2^80185189929 is an apocalyptic number.

It is an amenable number.

80185189929 is a deficient number, since it is larger than the sum of its proper divisors (34959453783).

80185189929 is a wasteful number, since it uses less digits than its factorization.

80185189929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123856.

The product of its (nonzero) digits is 3732480, while the sum is 60.

It can be divided in two parts, 801851 and 89929, that added together give a triangular number (891780 = T₁₃₃₅).

The spelling of 80185189929 in words is "eighty billion, one hundred eighty-five million, one hundred eighty-nine thousand, nine hundred twenty-nine".